import java.util.ArrayList;
import java.util.List;

public class P008LargestProductInASeries
{
    public static void main(String[] args)
    {
        String source = "73167176531330624919225119674426574742355349194934"
        + "96983520312774506326239578318016984801869478851843" + "85861560789112949495459501737958331952853208805511"
        + "12540698747158523863050715693290963295227443043557" + "66896648950445244523161731856403098711121722383113"
        + "62229893423380308135336276614282806444486645238749" + "30358907296290491560440772390713810515859307960866"
        + "70172427121883998797908792274921901699720888093776" + "65727333001053367881220235421809751254540594752243"
        + "52584907711670556013604839586446706324415722155397" + "53697817977846174064955149290862569321978468622482"
        + "83972241375657056057490261407972968652414535100474" + "82166370484403199890008895243450658541227588666881"
        + "16427171479924442928230863465674813919123162824586" + "17866458359124566529476545682848912883142607690042"
        + "24219022671055626321111109370544217506941658960408" + "07198403850962455444362981230987879927244284909188"
        + "84580156166097919133875499200524063689912560717606" + "05886116467109405077541002256983155200055935729725"
        + "71636269561882670428252483600823257530420752963450";
        
        int max = 0;
        for (int i = 0; i < source.length() - 5; ++i)
        {
            String sub = source.substring(i, i + 5);
            
            List<Integer> ints = new ArrayList<>();
            for (int j = 0; j < 5; ++j)
            {
                ints.add(Integer.parseInt(sub.substring(j, j + 1)));
            }
            
            int current = 1;
            for (int k : ints)
            {
                current *= k;
            }
            
            if (current > max)
            {
                System.out.println(current);
                max = current;
            }
        }
        
        System.out.println(max);
    }
}
